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Atj-java-primitive-array-model

Float-array-write

Write a component to a Java float array.

Signature
(float-array-write array index component) → new-array
Arguments: array — Guard (float-arrayp array).; index — Guard (int-valuep index).; component — Guard (float-valuep component).
Returns: new-array — Type (float-arrayp new-array).

Definitions and Theorems

Function: float-array-write

(defun float-array-write (array index component)
 (declare (xargs :guard (and (float-arrayp array)
                             (int-valuep index)
                             (float-valuep component))))
 (declare (xargs :guard (float-array-index-in-range-p array index)))
 (let ((__function__ 'float-array-write))
   (declare (ignorable __function__))
   (if (mbt (float-array-index-in-range-p array index))
       (float-array (update-nth (int-value->int index)
                                component
                                (float-array->components array)))
     (float-array-fix array))))

Theorem: float-arrayp-of-float-array-write

(defthm float-arrayp-of-float-array-write
  (b* ((new-array (float-array-write array index component)))
    (float-arrayp new-array))
  :rule-classes :rewrite)

Theorem: len-of-components-of-float-array-write

(defthm len-of-components-of-float-array-write
  (b* ((?new-array (float-array-write array index component)))
    (equal (len (float-array->components new-array))
           (len (float-array->components array)))))

Theorem: float-array-index-in-range-p-of-float-array-write

(defthm float-array-index-in-range-p-of-float-array-write
  (b* ((?new-array (float-array-write array index component)))
    (equal (float-array-index-in-range-p new-array index1)
           (float-array-index-in-range-p array index1))))